I saw an electric drag bike out here a couple years ago... weird as it didn't really make any noise except the tire during the burnout.

There's also a youtube of the bike inventer wrecking it during a TV interview in front conference center on the sidewalk... lucky to be alive:

http://www.youtube.com/watch?v=YV8_meso6kU

For me... I hope we still have petrol around for a while!

-Chris